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国内主要输油管线近几年普遍输油量不足,如秦皇岛——北京管线年输量仅为设计能力的一半左右。为了调节输油量以往唯一的方法是在泵出口采取阀门节流,因此浪费了大量的电力。石油工业部管道局为解决这一浪费能耗问题,从八二年四月起,开始在秦皇岛泵站进行调速型液力偶器工业性试验。这一试验可充分利用原有设备,仅需加装液力偶合器一台,在保持电机转速不变的情况下只对输油泵无级调速,输油泵转速的改变也就改变了泵的特性,得到了需要的排量和相应的扬程。截止今年五月份止,机组已累计运行5212小时,设备运行平稳,节电效果显著。设备本体四万元、加土建等费用共七万元已在运行后三至四个月内全部收回。除此之外,液力偶合器还具有调速性能好、无级、平稳、易于实现自动控制和大
In recent years, the main domestic oil pipelines have suffered from insufficient oil transportation. For example, the annual output of Qinhuangdao-Beijing pipeline is only about half of that of design capacity. In the past, the only way to regulate oil delivery was to throttle the valve at the pump outlet, thus wasting a lot of electricity. In order to solve this waste energy consumption issue, the Pipeline Bureau of the Ministry of Petroleum Industry started to carry out industrial tests of speed-controlled hydraulic couplers at Qinhuangdao Pumping Station since April of next year. This test can make full use of the original equipment, only need to install a hydraulic coupling, while maintaining the motor speed unchanged, only the pump variable speed, pump speed change will change the pump Characteristics, have been the displacement required and the corresponding head. As of May this year, the unit has accumulated 5212 hours of operation, equipment, smooth operation, significant energy-saving effect. Equipment, 40,000 yuan, plus costs such as civil construction a total of 70,000 yuan has been running within three to four months after the full recovery. In addition, the hydraulic coupling also has good speed performance, stepless, stable, easy to achieve automatic control and large